[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

compliance_checker/tests/helpers.py

@@ -31,6 +31,7 @@ def __dealloc__(self):
         except AttributeError:
             pass
 
+
 class MockTimeSeries(MockNetCDF):
     """
     Mock time series with time dimension and time, lon, lat, and depth